package com.mmm.utils;

/**
 * @author mmm
 * @date 2021/9/23 - 15:12
 */
public class MD5 {
        public String encode(byte[] source) {
            String s = null;
            char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
            try {
                java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
                md.update(source);
                byte tmp[] = md.digest();
                char str[] = new char[16 * 2];
                int k = 0;
                for (int i = 0; i < 16; i++) {
                    byte byte0 = tmp[i];
                    str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                    str[k++] = hexDigits[byte0 & 0xf];
                }
                s = new String(str);
            } catch (Exception e) {
                e.printStackTrace();
            }
            return s;
        }

        public String getMD5(String source) {
            return (source == null || "".equals(source)) ? "" : encode(source.getBytes());
        }
    }

